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Well, the family Chamaemyiidae is notoriously difficult. Recent work on the European fauna has only been done by Tanasiichuk and I think I took this from an older work by him. In a more recent work on the Diptera of the Russian Far East (2001) there is one species with banded abdomen and it is refered to as:
Ch. fasciata Lw. (elegans Tanas., non Panzer)

That might mean that Collin (and you) are right and that I followed a wrong interpretation by Tanasiichuk. I will see if I can find out more.